I work on script so I want control to backlight of LCD screen with PWM(software). It is worked earlier but it does not work now. I commented out bakclight divide and worked on the other modules on software. Now I want use but I took this error. I researched on net but I could not fix this. How can I fix this error? My pwm code divide this:

Post the *full* error message *and* the code that causes the error (the code you posted above will crash on the first line, because there's a typo)
Use code tags for both; see viewtopic.php?f=32&t=84477